One comment to Tukhachevskii's Afganistan comment. During IIWW Soviet troops used this kind of launcher in Caucasus. Fuchs can say now that this is copy of Nebelwerfer
Fin stabilized, rail instead of tube-launched - very different and much smaller than a Nebelwerfer - also much less complicated (the ammunition).
Mortars are not good against forward slope positions on a steep mountain, but that kind of position is rather rare anyway.
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